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	<dxl:Comment><![CDATA[
	When the column in the filter predicates is also present in the window function, it is possible to push it down.

	CREATE TABLE sales (trans_id int, date date, region text)
	DISTRIBUTED BY (trans_id)
	PARTITION BY RANGE (date)
	SUBPARTITION BY LIST (region)
	SUBPARTITION TEMPLATE
	( SUBPARTITION usa VALUES ('usa'),
 	SUBPARTITION europe VALUES ('europe'),
 	DEFAULT SUBPARTITION other_regions)
 	(START (date '2011-01-01') INCLUSIVE
  	END (date '2011-06-01') EXCLUSIVE
  	EVERY (INTERVAL '1 month'),
	DEFAULT PARTITION outlying_dates );

	EXPLAIN WITH cte as (SELECT *, row_number() over (PARTITION BY date,region) FROM sales) SELECT * FROM cte WHERE region = 'usa';
		
	]]>
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            <dxl:LimitCount/>
            <dxl:LimitOffset/>
            <dxl:RedistributeMotion InputSegments="0,1,2" OutputSegments="0,1,2">
              <dxl:Properties>
                <dxl:Cost StartupCost="0" TotalCost="431.000046" Rows="1.000000" Width="16"/>
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              <dxl:ProjList>
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                  <dxl:Ident ColId="11" ColName="trans_id" TypeMdid="0.23.1.0"/>
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                  <dxl:Ident ColId="12" ColName="date" TypeMdid="0.1082.1.0"/>
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                  <dxl:Ident ColId="13" ColName="region" TypeMdid="0.25.1.0"/>
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              <dxl:Filter/>
              <dxl:SortingColumnList/>
              <dxl:HashExprList>
                <dxl:HashExpr>
                  <dxl:Ident ColId="12" ColName="date" TypeMdid="0.1082.1.0"/>
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                <dxl:HashExpr>
                  <dxl:Ident ColId="13" ColName="region" TypeMdid="0.25.1.0"/>
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                    <dxl:Ident ColId="12" ColName="date" TypeMdid="0.1082.1.0"/>
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                    <dxl:Ident ColId="13" ColName="region" TypeMdid="0.25.1.0"/>
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                    <dxl:Cost StartupCost="10" TotalCost="100" Rows="100" Width="4"/>
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                  <dxl:ProjList/>
                  <dxl:PartEqFilters>
                    <dxl:ConstValue TypeMdid="0.16.1.0" Value="true"/>
                    <dxl:PartEqFilterElems>
                      <dxl:ConstValue TypeMdid="0.25.1.0" Value="AAAAB3VzYQ==" LintValue="2607030223"/>
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                  </dxl:PartEqFilters>
                  <dxl:PartFilters>
                    <dxl:ConstValue TypeMdid="0.16.1.0" Value="true"/>
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                  <dxl:ResidualFilter>
                    <dxl:ConstValue TypeMdid="0.16.1.0" Value="true"/>
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                  <dxl:PropagationExpression>
                    <dxl:ConstValue TypeMdid="0.23.1.0" Value="1"/>
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                  <dxl:PrintableFilter>
                    <dxl:Comparison ComparisonOperator="=" OperatorMdid="0.98.1.0">
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                    <dxl:Cost StartupCost="0" TotalCost="431.000029" Rows="1.000000" Width="16"/>
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                    <dxl:Comparison ComparisonOperator="=" OperatorMdid="0.98.1.0">
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                      <dxl:ConstValue TypeMdid="0.25.1.0" Value="AAAAB3VzYQ==" LintValue="2607030223"/>
                    </dxl:Comparison>
                  </dxl:Filter>
                  <dxl:TableDescriptor Mdid="6.147456.1.0" TableName="sales">
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                      <dxl:Column ColId="11" Attno="1" ColName="trans_id" TypeMdid="0.23.1.0" ColWidth="4"/>
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          </dxl:Sort>
          <dxl:WindowKeyList>
            <dxl:WindowKey>
              <dxl:SortingColumnList/>
              <dxl:WindowFrame FrameSpec="Range" ExclusionStrategy="Nulls">
                <dxl:TrailingEdge TrailingBoundary="UnboundedPreceding"/>
                <dxl:LeadingEdge LeadingBoundary="CurrentRow"/>
              </dxl:WindowFrame>
            </dxl:WindowKey>
          </dxl:WindowKeyList>
        </dxl:Window>
      </dxl:GatherMotion>
    </dxl:Plan>
  </dxl:Thread>
</dxl:DXLMessage>
